Instasearch -- Eclipse IT 2010

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Instasearch, a full-text search plugin for Eclipse without using any external plugin, made by Andrejs Jermakovic

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Instasearch -- Eclipse IT 2010

  1. 1. An Eclipse Plug-in for Code Search using Full-text Information Retrieval Engine Andrejs Jermakovics Francesco Di Cerbo Free University of Bolzano-Bozen Bolzano-Bozen, Italy
  2. 2. Introduction ● Search is becoming an important aspect of software development motivated by growing code sizes and open-source availability. ● Moreover, users (and also developers) are getting used to full-text searches for emails and file contents. ● Why not creating a plugin to support full- text searches in Eclipse? 2
  3. 3. Searches in Java: Lucene ● Lucene is an information retrieval software. ● It is FLOSS, and is used in many other software: ● Alfresco ● SolR ● Eclipse ● ... 3
  4. 4. Lucene in Eclipse ● Lucene is part of Eclipse. ● NOT for the Search functions! ● It is mostly used for the Eclipse Help! ● … Why not using it for CODE? CODE 4
  5. 5. Instasearch ● InstaSearch provides powerful and flexible code search with high performance. ● It offers flexibility through Lucene query syntax, defining a set of specific fields for file searches. ● The currently available fields are: Field Description file Full path of the file name Name of the file ext Extension of the file proj Name of the project containing the file jar Name of the jar if file is stored in a jar contents Contents of the file (default search field) ws Working set containing projects (virtual field) 5
  6. 6. Instasearch searches ● Supported search types: ● wildcard searches to search using a substring: ● app* initialize ● searches on fields value: ● proj:MyProject ext:java,xml application init ● ws:MyWorkingSet application init ● fuzzy searches to find similar matches: ● application init~ ● advanced queries: ● index AND (directory OR dir) 6
  7. 7. Instasearch screenshot 7
  8. 8. Instasearch: code highlighting 8
  9. 9. Instasearch: search&results view 9
  10. 10. Instasearch Architecture 10
  11. 11. Instasearch components (1/2) ● Analyzer ● It reads files from the workspace and splits the text into a set of tokens. Both the original word and its split parts are indexed thus allowing to search for parts of identifiers as well as searching for the exact identifier. ● Indexer ● The Indexer collects files with their tokens and writes them to Lucene index. The meta-data associated with each file is specified using several fields which can later be used in a Lucene search query to filter results. 11
  12. 12. Instasearch components (2/2) ● Query analyzer ● Parses the search text entered by the user and creates a search query which is used to retrieve the files from the index. It also elaborate the search queries, e.g. dealing with virtual fields. ● Instasearch View ● Performs all UI interactions for getting the search text and displaying a list of matching files. The search is performed while the search text is being typed thus allows the user to tune it quickly for more relevant results. 12
  13. 13. Conclusions ● Instasearch is very fast, using a dynamic update mechanism it does not intefere with usual Eclipse tasks. ● It is released under EPL license, it is available on the Eclipse Market, and it is hosted on Free University of Bolzano- Bozen FLOSS forge. 13
  14. 14. Instasearch website 14
  15. 15. Thanks for your attention! Andrejs Jermakovics andrejs.jermakovics@unibz.it Francesco Di Cerbo fdicerbo@unibz.it https://code.inf.unibz.it/projects/instasearch Mark Instasearch as favourite on the Eclipse Market! 15

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